package com.app.mingluxing.utils;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import Decoder.BASE64Decoder;
import Decoder.BASE64Encoder;


/**
 * 聊天时文件的BASE64用的
 */
public class File2Code {

    /**
     * <p>
     * 将文件转成base64 字符串
     * </p>
     *
     * @param path 文件路径
     * @return
     * @throws Exception
     */
    public static String encodeBase64File(String path) throws Exception {
        File file = new File(path);
        FileInputStream inputFile = new FileInputStream(file);
        byte[] buffer = new byte[(int) file.length()];
        inputFile.read(buffer);
        inputFile.close();
        return new BASE64Encoder().encode(buffer);
    }

    /**
     * <p>
     * 将base64字符解码保存文件
     * </p>
     *
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void decoderBase64File(String base64Code, String targetPath)
            throws Exception {
        byte[] buffer = new BASE64Decoder().decodeBuffer(base64Code);

        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }

    /**
     * <p>
     * 将base64字符保存文本文件
     * </p>
     *
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void toFile(String base64Code, String targetPath)
            throws Exception {
        byte[] buffer = base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }

}